1. Department of Radiology; Taipei Veterans General Hospital; 201, Section 2, Shih-Pai Road Taipei Taiwan Republic of China
2. School of Medicine; National Yang-Ming University; Taipei Taiwan Republic of China
3. Department of Pathology; Taipei Veterans General Hospital; 201, Section 2, Shih-Pai Road Taipei Taiwan Republic of China
4. Department of Radiology; National Taiwan University College of Medicine; Taipei Taiwan Republic of China